Surface cleaner base



FIG. 1 is a front, right perspective view of a surface cleaner base showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof; and,

FIG. 6 is a top view thereof.

The broken lines are shown for the purpose of illustrating unclaimed portions of the surface cleaner base and form no part of the claimed design. 

CLAIM The ornamental design for a surface cleaner base, as shown and described. 